Varying upload speeds to a server on a network
Posted on 2013-01-17
Hello - I'm trying to figure out why I'm seeing extreemely slow data upload transmission speeds from some of the workstations on our network, while other computers of the same make, and same NIC card, are uploading very fast. The way it was discovered was through attempting Ghost backups, and some finished in an hour, while others took a day. So I used a LAN Speed Test tool to run some testing, and saw that on the machines that were very fast, they were WRITING data at speeds of 30-40mbps, and the slow ones were under 1mbps (but reading very fast). The machines that were tested are all connected at 100MBPS on the NIC card, and going through the same Cisco Catalyst 10/100 switch stack, and all were writing to the same drive on the same server, which has a Gigabit card in it. So - what could cause the varying write performance?
Thanks for your help